Suction-roll for paper-machines.



` WQ H.- MILLSPAUGH.

I SUGTION' ROLL POR PAPER MACHINES. v Arljllmcnlox HLBD MA3.12,1901.

a susfrsfsansr 1.

gnuenhv;

v3 i u PATBNTED AUG. 4, 1908.

m if mmw A t I Y. I I

ATBNTED AUG.'4, 1908.v

Y W.. H. MILLSPAUGH. 1

S'UGTION ROLL POR PAPER MACHINES. l l.r3PlPLIGATION FILED MAR 12 1907 ywwwa-* .the ren, rsp

unirsi) ASTATES WILLIAM H. MILLSPAUGII, or SANDUSKY, oHIo, AssIGNoR orONETHIRD 'ro I. i..DAucH AND oNnrHIRD To WILLIAM F. HARBREcH'r, orSANDUSKY, omo-AND ONE-THIRD 'ro FRED BOERGER, OF DELPHOS, OHIO.

' sUcTIoNRoLnFoR rnrnauncmns.

:rolls' which are employed in paper-making machinery for extractingwater and moisture from the paper-pulp while it is forming on aninterstitial or porous conveyer, such as the rnaking wire or telt. Asthe pulp-conveying iveb asses over or partially around the roll, theatter being perforated or' fenestrated, the extraction of moisture ise'l'ected by suction or creation of a vacuum inside the'roll, which forthat purpose contains a non-rotative suction-bon or chamber incommunication with a. vacuum-pump or exhaust apparatus; the open top oiseid suction-box bemg in close contact` with the interior surface of theroll. Although these suction-rolls, re volving with the same surfacespeed as that of the conveying web, 'possess the advantage or avoidingfriction and Wear on the wires or tearing `of the elts, yet the 'havenot heretofore been brought to a satis actory degree of perection,either in mechanical construction or character of operation. A materialdefect has been the diculty of y maintaining the suction-box inair-tight contact Withthe roll, so as to eilectively utilize thesuction, .while at'the same time obtaining the exact degree ofpressuredesired and preventing l hex from becoming locked to Uy under iniuenceof ahepvy e tial vacuum, which re uires additional poner to run the rollor c l nder and causes' more or lessdrsg and inter erence with theproper operation of the mechanism. Another deiciency in this class ofdevices, has been the lack of convenient means 'for setting thesuction-box at different angular Vpositions in the roll or cylinder, inorder lao-adapt the latter to the line of travel of thepulpconveying`web, which in some machines 'ma .pass centrally over thetop of the roll,

wlule in others it may pass over or partiell?7 around the roll moreorless at onesxde thereo 4 YSpeccation. o! Letters Patent.

Application filed March 12, 1907. Serial No. 962,058.

. nnrssonn i Patented Aug. d, 1908.

The foregoing and other objections are obviated by my present invention,which aims to provide a suction-roll that is mechanically erfect,durable and `highl efficient, and aving practicable means or'securing adjustment of the suction-box both radially land angularly, `and forholding said box in perfect air-tight contact with the interiori surfaceofthe revolving shell while Tet pre`| venting locking of the box to theshell.

The accompanyingdrawings, which are to be taken as a art of thisspecification, illus- Atrate two. em 'odiments of my invention,

which may also be embodied in other forms and may be modified as todetails of construction and arrangement of parts. Without restrictingmyself, therefore, to these specific illustrated constructions,- theinvention will hereinafter be fully described With reference ,to saiddrawings, and then more particularly pointed out and defined in theappended claims.

Figure 1 of said drawings is a side elevation ofa machine embodymg myInvention, an intermediate portion of the" roll being broken away.` Fig.2' is one end view there# of. Fig. 3 is the opposite end view thereof.Fig- 4 is a central longitudinal vertical section of the same. F ig. '5is a cross-section online 5-45 of Fig. 4, looking in the direction ofthe arrow. Fig. 6 is a cross-section throu the roll and suction-box.Fig. 7 is a centr other machine embodying 'my invention. Fig. 8 is anend view thereof. Fig. 9is a plan view of one of the heads which supportthe suction-box. Fig. 1-0 is a central horizontal section through seidhead, showing the end of the suction-box in nien view.

Reierrinx7 to Figs. 1 to 6 inclusive, the per' latter are or may heconstructed as supporting brackets for the roll.

W'ithin the shell or cylinder is the longitudinally-disposed suction-boxC, the open top of which conforms to the curvature of longitudinalvertical section of arl-- and'fits closely against the interior surfaceofthe shell, at the upper side thereof; there be v mg' Aa packingstripor strips c seated in a groove or rabbet entirely surrounding saidopen top, to take the wear and form an air-tight juncture with thesurface of the shell, as usual 1n devices of this class. 4Thesuction-box C roper has tubular ends D,

openftopped portion of the box, which alone.

constructed or ormed lower than the medial bears against the interiorsurface of the cylinder. One or both of said ends D, preferably both, isor are adapted for'cc'rm'nunication with' a suction-pump or otherexhaust apparatus; the extremities of said ends D bem shownlongitudinally threaded for coup ing to pipe connections Withsaid pump.

At opposite ends ofthe cylinder'are circular heads E, in which the endsD of the suction-box are spring-supported as hereinafter described,allowin the necessary radial play or motion of the box to adjust thepressure with which it' bears against the interior sur face of theshell.

larly, being secured in clamp-rings F, which latter are rigidly attachedbyscreW-bolts -or studs to the sides of the bearings or annular bracketsl. On loosemrgl the clamp-bolts or studs f, the itwo heads la can beturned in or. partially around the roll or cylinder.

The heads E are provided,alon diametl' 40 rical openings or Waystherein, .Wit parallel Aguides e, made preferably on` the outer sides ofthe heads; and the ends D of the suctionvbox, extendin' through saido`enings, are slidably iitted betiveen said guidi' ter being faced withbrass or other a propriate material, and the box-ends D etween theguides being constructed or provided with ila-t side-plates or facings dof similar metal or material, to preserve a smooth sliding bearing andprevent rust and consequent locking of thel box in the guides. In saidheads E, under the ends D of the suction-box, are mounted stout coil srings H, which lift up the box and yielding y but forcibly su 55 port itwith its open face 1n contact with t e 'interior surface of the cylinderA. Said springs are shownseated on bosses h in the lower parts of theheads, and having their upper ends fitted to bosses h' on the bottoms ovthe ends of the suction-box; and, to per- 4mit adjustinthe tension orpressure of the s rings, saida bosses h, h may comprise anged nutstapped on threaded studs, whereby the nuts may be adjusted to con` tractor distend the springs, as desired. The

Sald heads E arestation-k `.\a ry, but are adapted'to be adjusted anupward lift ofthe suction-box is limited by a justable stops Jvconsisting of set-screws, one at each en d of theroll, tapped throughpro'ect-ions e ont-he outer sides of the heads e, a, ove the ends D ofthe box and bearing .on the la.tter;.the said setscrews being 'ses ItWill thus be sccn that the suction-box, having its ends alined in .theguides e, is assured a'perfectly radial play or motion; and, the' boxbeing constantly forced upward. by the power of its supporting springsf., its open top is at'all times held positively m air-tight Contactwith the interior surface of the roll or cylinder, thus preventingliability of leakage lor waste or destruction of the vacuum, andinsuring the effective' utilization of the suction; while., at the sametime, the vacuum is'prevented from unduly lifting the box and locking itto the shell, and the beari fr pressure of the box against the shell iseas y regulated, all adjustrnenis necessaryv being made b .the twoset-screws J, which may be manipu ated by a. common Wrench.

In view of the foregoing, the roll may be operated as safely as and with.no more trouble than an ordinary press-roll; no more air need beremoved from the roll than passes through the paper and felt, whichmeans that the pump may be-of moderate size; and it is entirelypracticable to maintain 'a vacuum such as necessary to secure maximumworking results, without requiring excessive povver` to'ruri themachine; In addition to these advantages, the roll accomplishes animproved grade of work, enabling the operator to obtain dryfelts andpaper for delivery to the presses, and a sheet more free from feltmarks, and'thicker bv #age if pressed to the same dryness and deliveredto driers at "the same percentage of dryness as ith old methods, or asheetdrier when delivered to driers at the same thickne as with oldmethods, thereby lesseni'ng the amount of steam used to finish, or, ifsame steam be used, securing greater speed and-production. Numerousminor advantages appear in the operation of the machines.

For driving the roll or cylinder A, it is 'shown in Figs. 1 and 3 vided.with a gear Kin mesh with a pinionkla, the. shaft of which pinion isjournaled in a box l therefor constructed on or as a part of one of theannular bearing brackets B.

The machine shown in Figs` 7 and S is substantislly similar to thatalready described, except in the following particulars. In thisembodiment of my invention, the separato clamp-rings (indicated by theletter F in Figs. 1 to 6 inclusive) are dispensed with, and the heads E,.which support the suction-box are mounted in annular brackets orstandards Bf, and aresecured in fixed position therein b v means ofset-screws b', which of course permit angular adjustment of thc heads inorder to set the b ox at different angular positions. In'thiscase, theshell or cylinder A may be revolubly journaled on or in the brackets B',or on the heads E, the lattei; construction being shown, that is theends of the cylinder are shown revolublv fitted on inward flanges on thesaid heads E.'

I claim as my invention and desire to sccure by Letters Patent 1. In asuction-roll, the combination with the revoluble perforatedc linder andsuctionbox therein, of means yie dingly forcing said box in Contact withthel interior surface of tion-box therein, of means yieldingly forcingsaid box in contact with the interior surface of said cylinder, andadjustable stops limit -ing the lift of said box toward said surface andaffording regulation of the contact of said box with said surface.

3. In a suction-roll, the combination with the revoluble perforatedcylinde` andsuc'-` tion-box therein, of means yieldingly supporting saidbox and thereby maintaining it in contact with the interior surface ofsaid cylinder, and means operating opposition to said supporting meansfor regulating the bearing pressure of the box upon said surface.

4. Ina suction-roll, the combination with the revoluble perforatedcylinder and suction-box ytherein' of 'means sup orting or foiicing saidbox in 'contact with t e interior surface of said cylinder, and stopsarranged to limit the lift of said box and preventlocking thereof tosaid surface under infi'uence of the vacuumoi' suction.

5. In'a suction-roll, the combination vviththe revoluble perforatedcylinder and sution-box therein, of stationary heads having radialor'diametrical guides in which the ends of the box are slidably-fitted,spring-supports for said box located under the ends thereof in saidheads, thereby forcingl the open top of the box in contact ivith'theinterior surface of said cylinder, and set-screws carried by said headsabove theend's of the box andl bearing thereon, thereby affordingadjustable means' for limiting'the lift of said box toward'said surface.f

6. In a suction-box, the combination of the revoluble perforatedcylinder having stationary heads, a longitudinal i suction-box thereinhavin Van open-top ed portion in contact with t e interior surfice 'ofsaid cylinder and having tubular portions extending through diametricalor radial Ways or openings in said heads, sprin supports mounted in saidheads under and earing up the ends of said box, and projections on saidheads above the ends of the'box and zet-screws tapped therethroughlimiting-thc lift of the box.

7. In a suction-box, thel combination .of-l

the revolubleperforated cylinder and suc-v tio'n-box therein,A thelatter beingredially adjustable and having means forcingit 1n contactwith the interior surface of'said cylindes., and stationary guidewaysfor the ends of said box in which the latter are slidsblyfitted, saidguide-Ways and the contacting sides of the ends of the box havingnon-corrosive facings to prevent rust and ocking of the box in saidguide-ways.

8. In a suction-roll, the combination of the revoluble perforated rolland suction-boxtherein, of stationary heads supporting the ends of saidbox, springs-carried b v said heads and bearing upv the box, and Set.

screws tapped through ears on .said heads and bearing upon the box..

9.' In a suction-roll, he combination with a revoluble perforatedcylinder and suctionbox therein, of s ring-supporting means for said boxholding its open top in contact with the interior surface of thecylinder, guides for` i.

said box arrangedradially of said cylinder,"

and adjustable stops limiting the pressure or .lift-of said box againstsaid cylinder.

10. In a suction-roll, the combination with the revoluble perforatedcylinder, of ststionary but singularly-adjustable heads, a iongitudinalsuction-box Within said cylinder and i supported by .said heads, niesnsvi-hereby said box can be set at different angular tions in-saidcylinderand in Contact the f interior surface thereof, and ineenscarried by said heads for adjusting said box rn reiation to its bearingon the interior surface-of said cylinder.

11. In a suction-roll, the combination with the revoluble perforatedcylinder, of s. nonrotative suction-box therein, stationaifheads inwhich the ends of said box are mnvably supported, means bearing said boxin con'- bearings or supports for said heads in iii'hich the latter are'angularly adjustabie, and

means for iixedly securing said heads in said bearings or supports.

12.' In `a'suction' roll, the combination with the revoluble perforatedcylinder, of a non: rotative su ation-box therein, stationaryheads inwhich the ends of said. box are ineably ings'or supports, and tie-rodsconnecting tact with the interior surface of said cylinder, i

said heads and causing thein to be adjustable only in unison. t

13. In a suction-roll, the combinaison of annular brackets, headsfixediy-secured but singularly adjustable therein, a revoluhieperforated cylinder having its ends journsed in or on annular bearingsprovided by the sieresaid elements, and a longitudinal suction-box 12efor iixedly securing said heads in said bearvthere-ln having'its endsniova-bly-suppo'rted ination of a vbox in said cymder su ported by sai-dheads.

15. In a suction-rol the com revoluble perforated cylinder, stationaryheads therefor, means for singularly adjust- Y ing said heads, annularbearings for the ends of wfd cylinder with said heads, and a 15suctionbox Within the cylinder supported by said heads.

In testimony -whereof 4I affix my signature, in presence of twowitnesses.

YVILLLDI H. MILLSPAUGH "tnessesr GEO. A. BIAGKFORD, MARTHA LrmJER.

